What stroke me especially was the shape of the Marianas Trench (much wider than deep)
[edit] This reminds me I used to have a printout of a similar, but more space-related, comic http://xkcd.com/482/ hanging on the wall next to my desk in estec... good ol' times...
"To create Sketch-RNN, Google Brain researchers David Ha and Douglas Eck collected more than five million user-drawn sketches from the Google tool Quick, Draw! Each time a user drew something on the app, it recorded not only the final image, but also the order and direction of every pen stroke used to make it. The resulting data gives a more complete picture (ho, ho, ho) of how we really draw."
It's funny because this David Ha used to be a quant banker ha ha